Fractional Factorial Designs with Blocks and Center Points

Points to Remember

ADX has a factor library that stores factor names, levels, and labels for saved designs. You can use the factor library to define variables for a design.
Blocking can help remove nuisance effects from variability.
Blocks are typically aliased with other effects in a design.
Adding center points enables detection of response nonlinearity and an estimate of variance.
Once responses have been entered into a design, you can view customization details, but you cannot make changes to the design.